/* Base styles */
* {
  box-sizing: border-box;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

#root {
  min-height: 100vh;
}

/* App Layout */
.app-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--color-background);
}

.header {
  border-bottom: 1px solid var(--gray-a5);
  background: var(--color-panel-solid);
}

.main-content {
  flex: 1;
}

.footer {
  border-top: 1px solid var(--gray-a5);
  background: var(--color-panel-solid);
}

/* App title styling */
.app-title {
  background: linear-gradient(135deg, var(--brown-11), var(--brown-9));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.coffee-emoji {
  font-size: 1.5rem;
}

/* Hero section */
.hero-section {
  text-align: center;
  padding: var(--space-4) 0;
}

.hero-text {
  line-height: 1.7;
}

/* Calculator card */
.calculator-card {
  background: linear-gradient(
    145deg,
    var(--color-panel-solid),
    var(--sand-2)
  );
  box-shadow: var(--shadow-4);
  border: 1px solid var(--gray-a4);
}

.dark .calculator-card {
  background: linear-gradient(
    145deg,
    var(--color-panel-solid),
    var(--sand-3)
  );
}

/* Input groups */
.input-group {
  text-align: center;
  padding: var(--space-3);
  border-radius: var(--radius-4);
  background: var(--color-background);
  border: 1px solid var(--gray-a4);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input-group:focus-within {
  border-color: var(--brown-8);
  box-shadow: 0 0 0 3px var(--brown-a4);
}

.input-icon {
  color: var(--brown-9);
}

.number-input input {
  text-align: center;
  font-size: 1.75rem !important;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.number-input input::placeholder {
  color: var(--gray-8);
}

/* Hide number input spinners for cleaner look */
.number-input input::-webkit-outer-spin-button,
.number-input input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.number-input input[type="number"] {
  -moz-appearance: textfield;
}

/* Equals sign */
.equals-sign {
  min-width: 40px;
}

/* Result card */
.result-card {
  background: var(--brown-2);
  border: 1px solid var(--brown-a4);
}

.dark .result-card {
  background: var(--brown-3);
}

.result-badge {
  padding: var(--space-3) var(--space-4);
  min-width: 100px;
}

.result-icon {
  opacity: 0.7;
}

/* Tip callout */
.tip-callout {
  border: 1px solid var(--brown-a5);
}

/* Slider customization */
[data-radix-slider-thumb] {
  transition: transform 0.15s ease;
}

[data-radix-slider-thumb]:hover {
  transform: scale(1.1);
}

[data-radix-slider-thumb]:active {
  transform: scale(0.95);
}

/* Smooth transitions */
.rt-Card,
.input-group,
[data-radix-slider-thumb] {
  transition: all 0.2s ease;
}

/* Mobile responsiveness */
@media (max-width: 520px) {
  .main-content,
  .header,
  .footer {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .equals-sign {
    width: 100%;
    padding: var(--space-2) 0;
  }

  .number-input input {
    font-size: 1.5rem !important;
  }

  .result-badge {
    padding: var(--space-2) var(--space-3);
    min-width: 80px;
  }

  .app-title {
    font-size: 1rem !important;
  }
}

/* Animation for initial load */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.calculator-card,
.result-card,
.tip-callout {
  animation: fadeInUp 0.4s ease-out;
}

.result-card {
  animation-delay: 0.1s;
}

.tip-callout {
  animation-delay: 0.2s;
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--brown-8);
  outline-offset: 2px;
}

/* Selection color */
::selection {
  background: var(--brown-a5);
}

/* Language selector */
.language-trigger {
  min-width: auto;
}

.flag-icon {
  font-size: 1.1em;
  line-height: 1;
}